Fabric-laying attachment for tire-making machines



' July 15. 1924..

Lsons'm J. E. THROPP FABRIC -LAYING ATTACHMENT FOR TIRE MAKING MACHINES Fileduuna 1s 1919 s sheets-sheet 1 July l5, 1924.. y 1,501,574

J. E. THRoPP FABRIC LAYING ATTACHMENT FOR TIRE MAKING MACHINES' Fled'vJune 13, i919 3 Sheets-Shet 2 Zwemor.-

J. E. THROPP FABRIC LAYING YATTACHMENT' IoR4 TIRE MAKING MACHINES 13, 1919 5 Sheets-Sheet 3\ f ff.,

Iwemor: 9.4L. E. @1

aan .ry is, rea.

JOHN E. THROPP, OF r.F.IREB'PIEON', NEW JERSEY,` ASSIGNOR T0 THE-*DELASKI & THROPPv CIRCULAR WOVEN TIRE COMPANY, OF TRENTON, NEW II'IEIRSEY,` CORPORATION' OF FBIO-LAYING ATTACHMENT FOR TIRE-MAKING- MACHINES.

Application filed` June 131919. Serial No. 303,965.

To all whom t lmay concer/n.' Y

Be it knownv that I, JOHN E. THRorP, a citizen of the United States, and resident of Trenton, in the county of Mercer and State of New Jersey, have invented a new and useful Improvement in Fabric-La ing At- 'tachments for Tire-Making Mac ines, of

which the following is a specification.

This invention relates to an `improvement in fabric layin attachments for tire making machines, andias for an object, to provide a device of this natureJ which is dual in construction to enable anappropriate tool or implement to be brought into operation Yfor l5 performing two different steps of the fabric laying operation.

Another object consists in providlng a device of this character, which embodies an im roved form of fabric laying im lement. 21D

tain improvements in the form, construction and arrangement of the ,several parts, whereby the above named and other objects ma be eiectivel attained.

yis well un erstood in the tire' making industry, machines for manufacturing tires frequently include a power driven core,

means for stretching fabric onto the periphery of the core and rollers for forming the 580, remainder of the fabric down on the sides of the core. These rollers are commonly composed of steel and have a relatively ythin edge. I have found that aproller. having its edge composed of some materialsuch as vnlcanized rubber and having its edge comparatively wide or thick, is very eective and desirable for laying down thefabric on:

the core, except. at points around the beads, at which latterplaces the thinner edged mea@ tallic roller is more desirablel With this thought inl mind, I have devised the dual or' doube attachmentv constituting# this invention. A practical embodiment of the invention is represented in" the, .accompanying drawings in which:

Fig. 1 represents a ltop'planviewff my invention, together with theiadjacent parts of a well known formpof tire making machine. p to Fig. 2 represents a section taken in the plane of the `line II-II of Fig. 1, looking 1n the direction of the arrows.

Fig. 3 represents a section taken inthe further object -consists in provi ing cerplane of the line III-III of Fig. 1 looking in the direction of the arrows.

Fig. 4 represents a detailed section taken in the plane of the line IV-V of Fig. 3, looking in the direction of the arrows, and

Fig. 5 represents a section taken in the plane of the line V-V of Fig. 3, looking in the direction of the arrows; the attachment peingshown in a midway position in dotted mes.

The core is denoted by l and a tire partly built thereon by 2. A layer of fabric to be applied on the partly built carcass is indicated by 3. y

`A pair of plates 4-4 are provided for supporting my improved device, and the said plates are carried on a pair of arms 5-'5, which are mounted for radial and lateral movement with respect to the core l. These plates and arms, together with their associated mechanism, correspond in construction and operation with the similar partsV shown and described in United States patent to John E. Thropp, Peter D. Thropp and Albert deLaski, No. 1,119,326, dated December 1, 1914, entitled Machine for making or building up pneumatic tires. Thus it will be undertsood that my present invention consists in an attachment to be applied to the tire making machine disclosed in the said patent, to take the place of the fabric laying rollers shown therein.; and, therefore, the construction and operation vof `the parts for supporting and' moving my present invention, will not be herein described.

et 6' bolted thereto, and in the inner end of this bracket', ah u right bearing pin 7 is mounted. The sai pin has'an enlarged lower end 8v to hold it against upward movement the bracket 6, anda stud 9 s protrudes from the end 8 into the bracket 6to fix the pin 7 against rotary movement in the bracket.

:A cross-headlO is journaled on the pin 7 y and has a clutch face 11 secured to the under ,side thereof in an suitable manner. The said clutch face 11 1s desi ed to mate withanother clutch face 12, w ich is fixed tothe bracket 6.7. rlhe clutch face 11 has ar pair of teeth 13 formed' thereon to enter corresponding recesses 14 in the clutch face 12. An expansion coil spring 15 is seated in a socket formed in the .bracket 6 and surrounds the p in 7. Its upper end abuts the clutch face 11, and thereby normally tends to hold the two clutch faces apart and the teeth 13 out of the recesses 14.

The upper part of the cross-head 1Q has a nipple 16 fixed thereto, which is exteriorly screw threaded for complementary lenagement with a corresponding thread ormed onf the interior of a nut 17. The nipple 16 and the nut 17 have a bearing fit on the pin 7.

A washer 18 rests upon the top of the nut 17 and serves as a wearing surface for a cam eccentric 19, which is pivoted at 20 in the reduced upper end of the pin 7. The eccentric 19 has a handle 21 for manual operation thereof.

From the foregoing description, it will be apparent that when the eccentric 19 is thrown into one position, in whichl the handle 21 projects at right angles to the pin 7, the clutch faces 11 and 12 will be out of. engagement, as shown in Fig. 4; and when the eccentric is reversed-so that `the handle 21 lies in the opposite position, the clutch faces 11 and 1.2 lwill be engaged, as shown in Fig. 3. The teeth and recesses 13 and 14 are so arranged that when they are in engagement one end or the other of the cross-head 10 is projecting toward the core 1.

The endsv of the cross-head,` 10 are bifur cated to provide bearings for a pair of fabric laying rollers. One of these rollers is denoted lby 22 and is composed-of some suitable metal such as steel. It has a relativel narrow rounded edge, and a hub 23 whic is rotatable in ball bearings 24 that are carried in the cross-head 10 and held l an annulus 30, which is circular in cross section and composedof some material such as vulcanized rubber havinga hard center 31 that may consist of metal such as piano wire. This-annulus 30 is clamped in the peripheral groove of the disc 26 by a ring 32, which is secured to the disc by screws 33. It will be noted that the annulus 30 protrudes from the disc 26 and ring 32 so as to present a curved' operating edge to the work.

By reason of the fact that the annulus 30 consists of a material such as rubber, it has no injurious effect upon the fabric be- `sented toward the core 1. The eccentric 19 is now reversed so as to cause the teeth 13 to enter the recesses 14 and thereby lock the cross-head in this position. The mechanism for forcing the arms 5 laterally toward the core and for feeding them radially with respect to the core is then putin operation, and the roller having the rubber edge 30 moves radially along the sides of the core, pressing the fabric firmly and smoothly into contact therewith. As already stated, this operation is not only perfectly satisfactory from the point of view of a successful laying of the fabric, but the character of the working edge 30 insures that no injury or abrasion is caused the fabric. When it is necessary to force the fabric into a crease or sharp angle, or to lay it around the beads, the position of the cross-head 10 is reversed by manipulating the eccentric 19, as already described, and the roller 22 presented toward the core 1. This roller is then suitably moved by the supporting and actuating mechanism laterally and radially with respect to the core so as to press the fabric rmly in position, as will be clear to anyone skilled in this art, and as is clearlydescribed in United States Patent No. 1,119,326 above mentioned.

The dotted lines in Fig. 5 OQ the drawings, denote a position of the cross-head 10 and parts carried thereby in moving from one position to the other, so as to present a d'iiferent roll to the core.

It will be understood that the two heads 10 and their rollers are operated at the same time, one on each side of the core.

In case the annulus 30 becomes unduly worn, it may be readily replaced by loosening the adjacent parts in `an obvious manner.

I desire it to be understood that various changes may be resorted to in the form construction and arrangement of thev severa parts, without departing from the s irit and scope of my invention, and hence do not intend to be limited to the details herein Shown and described, except as they may be included in the claims.

What I claim is:

1. A device of the character described comprising, a support, a cross head pivoted to swing thereon, a fabric laying roller merma mounted at each end ,of the cross head to rotate in a plane substantially at right angles to the plane of swinging movement. of the cross head, and means for locking the said cross head with either of said rollers presented to the Work.

2. A device of the character described comprising, a support, a cross head pivoted to swing thereon, a fabric laying' roller mounted at each end ofthe cross head to rotate in a plane `substantially at right angles to the plane of swinging movement of the cross head, one of said rollers having a relatively narrow operating edge and the other of said rollers having a relatively wide operatn edge.

3. E device of the character described comprising a support, a cross head pivoted 'to 'swing thereon, a fabric laying roller mounted at each end of the cross head to rotate in a plane substantially at right angles tothe plane of swinging movement of the cross head, one of said rollers having a relatively narrow metallic operating edge and the other of said rollers having a relatively wide rubber operatin ed e.

In testimony, that claim ythe foregoing as my invention, I have signed my name this second day of June 1919.

JOHN E. THROPP. Witnesses:

HARRY P. sLon, HAROLD Snrrnnmm 

